Expected rate of fisheries-induced evolution is slow

Commercial fisheries exert high mortalities on the stocks they exploit, and the consequent selection pressure leads to fisheries-induced evolution of growth rate, age and size at maturation, and reproductive output. Productivity and yields may decline as a result, but little is known about the rate...

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Bibliographic Details
Published in:Proceedings of the National Academy of Sciences - PNAS 2009-07, Vol.106 (28), p.11657-11660
Main Authors: Andersen, Ken H, Brander, Keith
Format: Article
Language:English
Subjects:
Animals
Biological Evolution
Biological Sciences
Commercial fishing
Ecological life histories
Evolution
Evolutionary biology
Fish stocking
Fisheries
Fisheries - statistics & numerical data
Fisheries management
Fishes - genetics
Gonads
Marine fishes
Models, Genetic
Mortality
Phenotypic traits
Physical growth
Selection response
Selection, Genetic
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Summary:Commercial fisheries exert high mortalities on the stocks they exploit, and the consequent selection pressure leads to fisheries-induced evolution of growth rate, age and size at maturation, and reproductive output. Productivity and yields may decline as a result, but little is known about the rate at which such changes are likely to occur. Fisheries-induced evolution of exploited populations has recently become a subject of concern for policy makers, fisheries managers, and the general public, with prominent calls for mitigating management action. We make a general evolutionary impact assessment of fisheries by calculating the expected rate of fisheries-induced evolution and the consequent changes in yield. Rates of evolution are expected to be [almost equal to]0.1-0.6% per year, and the consequent reductions in fisheries yield are
ISSN:0027-8424
1091-6490
DOI:10.1073/pnas.0901690106